How do you know where to "wrap" or "break" Python statement or expression into multiple lines?

README.md

stuff = set([ '%s.%s' % (prefix, type) for type in types(suffix) if prefix in get_types(given_type) ])
# how do I know where I can split this onto multiple lines?

and my answer is at the expression.

>>> [x
...     for
...             x
...                     in
...                             range(0,3)
...                                     if x == 2]
[2]
>>>

>>>
>>> [x
...     for
...             x
...                     in
...                             range(
...                                     0
...                                             ,
...                                                     3
...                             )
...                                     if x == 2 ]
[2]

based on http://stackoverflow.com/questions/13081479/where-can-i-find-the-formal-grammar-of-list-comprehension-in-python